8 Tools for Clearing Heavy Snow from High Tunnel Roofs

Imagine waking up to a silent, white winter wonderland, only to feel a pit in your stomach as you remember your high tunnel. Heavy, wet snow accumulates rapidly on poly-plastic roofing, threatening to crush your winter greens and buckle the metal frame underneath. Having the right tools on hand before the storm hits is the difference between a thriving spring harvest and a collapsed pile of twisted steel.

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Why Heavy Snow is a Threat to Your High Tunnel

High tunnels are lightweight, unheated structures designed to extend the growing season, not to support thousands of pounds of dead weight. Wet snow is incredibly dense, often weighing up to 20 pounds per cubic foot. As it piles up on the peak and shoulders of a hoop house, it exerts immense downward and outward pressure on the bows.

Once the weight exceeds the load capacity of the metal framework, structural failure happens in an instant. The plastic film can stretch, sag, and eventually tear under the weight, exposing delicate winter crops to freezing temperatures. Even if the plastic holds, a collapsed ridgepole or bent bow can ruin an entire season’s investment.

Safety First: Preparing for High Tunnel Snow Removal

Clearing snow from a high tunnel is a cold, slippery, and potentially hazardous chore that requires careful preparation. Never stand directly underneath the roof overhang or inside a heavily loaded tunnel while trying to clear it from the outside. A sudden slide of snow can bury a person or cause the structure to collapse inward without warning.

Before heading out, dress in warm, waterproof layers with high-traction boots to prevent slips on icy ground. Clear a safe path around the perimeter of the structure first so there is room to maneuver and retreat quickly if the snow slides. Ensure all tools are assembled, checked for cracks, and ready to go before the storm reaches its peak.

Roof Rake – Garelick Aluminum Snow Roof Rake

A roof rake is the first line of defense for pulling heavy drifts off the top curve of a high tunnel. It allows the user to reach high up onto the plastic canopy while keeping their feet safely on the ground. Without one, reaching the center ridge of a standard 12-to-15-foot hoop house is nearly impossible.

The Garelick Aluminum Snow Roof Rake stands out because of its lightweight, rust-resistant aluminum construction and smooth-rolling rollers. These rollers prevent the sharp metal blade from coming into direct contact with the delicate poly-plastic, drastically reducing the risk of a catastrophic puncture.

• Blade width: 21 inches for rapid snow clearing
• Reach: Includes four 5-foot snap-on poles (20 feet total reach)
• Weight: Under 6 pounds to minimize shoulder fatigue

While highly effective, the rigid aluminum handle requires some muscle control to guide smoothly over curved hoops. It is essential to keep the angle shallow to ensure the rollers, rather than the metal edge, glide along the plastic. This tool is ideal for growers with standard-height tunnels who need a durable, long-reaching solution, but it may be overkill for very small, low-profile caterpillar tunnels.

Snow Slicer – PolarMade SnowPeeler Premium Rake

When snow is deep, packed, or slightly icy, a standard rake can require too much physical effort to drag downward. A snow slicer cuts through the snowpack from the bottom up, allowing gravity to do the heavy lifting. It slides under the snow layer and cuts a clean block that slides effortlessly down a slick plastic sleeve.

The PolarMade SnowPeeler Premium Rake features a sharp, frame-mounted cutting head and a high-strength slide mat. The glide path created by the plastic slide allows massive chunks of snow to slide down and away from the high tunnel frame with minimal pulling force.

• Cutting frame: 18-inch commercial-grade aluminum cutter
• Slide length: 15-foot tear-resistant slide mat
• Extension: Reaches up to 30 feet with handle extensions

Users must exercise caution to ensure the metal cutting frame does not snag on wiggle wire channels or purlin bolts. It works best on straight-sided or gothic-arch high tunnels where the snow can slide straight down without catching on structural joints. This tool is perfect for solo operators handling heavy, wet snowfalls, but less suited for structures with many external fittings.

Push Broom – Harper Soft Bristle Push Broom

For light, dry snow, a harsh metal or plastic rake is unnecessary and risks scratching the UV-resistant coating on greenhouse film. A soft-bristled push broom provides a gentle way to sweep away light accumulations before they freeze. It distributes pressure evenly across the plastic, minimizing stress on any single point of the film.

The Harper Soft Bristle Push Broom is the ideal choice due to its dual-bristle design, which features soft outer bristles to sweep fine dust and stiff inner bristles to push heavier slush. The heavy-duty hardwood block holds up to wet conditions without warping or cracking.

• Broom width: 24-inch wide sweeping path
• Bristle material: Split-tip polystyrene resistant to water and oil
• Connection: Steel brace locks the handle securely to the broom head

To use this broom effectively on a high tunnel, it must be paired with a long extension pole. Keep in mind that soft bristles can clog with wet, freezing slush, requiring occasional shaking out during use. This is an indispensable tool for daily maintenance during light winter weather, but it will not replace a heavy-duty rake for deep, packed drifts.

Extension Pole – DocaPole Multi-Purpose Pole

Reaching the peak of a high tunnel from the ground requires a sturdy, rigid extension pole that will not flex under load. Standard broom handles are too short, and cheap telescoping poles will bend or snap when wet snow adds resistance. A high-quality extension pole acts as the backbone for brooms, scrapers, and squeegees.

The DocaPole Multi-Purpose Pole is constructed from high-quality, lightweight aluminum and features secure thumb-lever clasps. Its telescoping design allows for quick length adjustments, and the solid metal tip ensures attachments stay locked in place under heavy pressure.

• Reach options: Telescopes from 6 to 24 feet
• Tip type: Standard threaded solid metal tip with a locking screw
• Grip: Comfortable rubber hand grips for cold-weather use

At full extension, any pole becomes top-heavy and requires significant upper-body strength to control. It is best to extend the pole only as far as needed to maintain leverage and control. This pole is a must-have for anyone managing gothic-style or high-clearance tunnels, but may not be necessary for low, walk-in hoop houses.

Pull Rope – Ravenox Solid Braided Nylon Rope

When snow is too deep or high to reach with a pole, a pull rope offers a clever, two-person clearing method. By tossing a rope over the peak of the tunnel, two people can walk down opposite sides, sawing the rope back and forth to slice through the snow layer. This technique uses minimal physical effort and keeps workers far away from falling snow.

The Ravenox Solid Braided Nylon Rope is perfect for this task because its smooth, braided construction glides over plastic film without friction-burning or tearing it. Nylon is naturally resistant to rot, mildew, and UV damage, ensuring it remains pliable even in freezing temperatures.

• Diameter: 3/8-inch thickness for easy gripping with gloves
• Material: 100% solid braided nylon
• Strength: High tensile strength to withstand heavy pulling forces

This method requires a second set of hands and open space on both sides of the high tunnel to work effectively. Be sure to use a rope that is at least twice the width of the tunnel’s hoop span to allow for safe standing distances. It is an excellent, low-cost solution for multi-person homesteads, but impractical for solo farmers.

Support Post – FarmTek High Tunnel Ground Post

Sometimes the best way to clear snow is to prevent the roof from sagging while you work. Temporary internal support posts can be placed under the ridgepole during heavy storms to reinforce the frame against collapse. This structural insurance allows you to clear the exterior safely without fearing a sudden cave-in.

The FarmTek High Tunnel Ground Post is built from heavy-duty, galvanized steel designed to withstand extreme vertical loads. While originally meant for ground anchoring, these posts can be adapted with a wooden T-cap to support the interior ridgepurline during extreme weather events.

• Material: 14-gauge structural galvanized steel tubing
• Diameter: 1.66-inch outer diameter for high rigidity
• Corrosion resistance: Triple-flo coated for long-term outdoor durability

Installing temporary internal supports requires pre-planning and can temporarily block access to center walkways. Ensure the posts are set on a solid base, like a wooden block, to prevent them from sinking into soft greenhouse soil under load. This is a vital preventative tool for growers in heavy snow belts, but unnecessary for regions that only experience light, dusting snows.

Heat Cable – Frost King Electric Heat Cable

Melting snow before it can accumulate is a highly effective, hands-off approach to high tunnel maintenance. Running a specialized heat cable along the gutters or lower purlins of a high tunnel creates a warm channel that encourages snow to slide off naturally. This prevents dangerous ice dams from forming at the base of the roof curve.

The Frost King Electric Heat Cable is a reliable, pre-assembled solution that features a built-in thermostat to save energy by only operating when temperatures drop near freezing. Its tough, water-resistant outer jacket is designed to withstand harsh winter exposure.

• Lengths available: Options ranging from 30 to 100 feet
• Power consumption: Low-wattage design optimized for constant outdoor use
• Thermostat: Automatic operation activates at 38°F (3°C)

This system requires access to a reliable outdoor-rated GFCI electrical outlet near the high tunnel. Care must be taken to secure the cable so it does not rub directly against the plastic film under high winds. It is an ideal investment for busy or off-site growers, but less practical for remote plots without electrical access.

Snow Shovel – Suncast Ergo Snow Shovel

Once the snow is cleared from the roof, it piles up along the sides of the high tunnel, creating lateral pressure against the walls. If this shed snow is not shoveled away, it can block ventilation, crush the lower plastic, and prevent future snow from sliding off the roof. A reliable, non-marring snow shovel is essential for clearing these side drifts.

The Suncast Ergo Snow Shovel features a durable plastic blade with a protective wear strip that will not scratch or puncture the low-hanging poly-plastic. Its ergonomic bent-handle design reduces lower back strain, making the heavy work of clearing side drifts much more manageable.

• Blade material: High-impact poly blade with a non-abrasive edge
• Handle design: Ergonomic steel shaft with a comfortable D-grip
• Blade width: 18 inches for efficient snow moving

Metal-edged shovels should be strictly avoided around high tunnels, as a single slip can slice through greenhouse plastic instantly. When shoveling near the base, always leave a safety margin of a few inches of snow rather than scraping directly against the film. This shovel is a basic necessity for every high tunnel owner, regardless of their operation’s size.

How to Clear Snow Safely Without Tearing the Plastic

The golden rule of high tunnel snow removal is to avoid sharp edges and aggressive scraping motions. Greenhouse poly-plastic becomes brittle in freezing temperatures, making it highly susceptible to punctures and tears. Always use tools with rounded edges, soft bristles, or protective rollers to distribute pressure evenly.

Work systematically from the bottom edges upward to the ridgepole. Clearing the lower shoulders first gives the upper snow a clear path to slide down without piling up and creating a dam. Avoid pushing or pulling snow in a jerky motion; instead, use long, smooth strokes to glide the tool over the surface.

If ice has formed beneath the snow layer, do not attempt to chip or beat it off the plastic. Striking the frozen film will shatter or tear it instantly. Instead, wait for a sunny day when the solar gain inside the tunnel will naturally warm the plastic and melt the ice bond from the inside out.

Preventative Steps to Reduce Future Snow Accumulation

Designing and maintaining your high tunnel with snow shedding in mind will save hours of backbreaking labor during the winter months. Selecting a gothic-arch frame design rather than a traditional round hoop house naturally encourages snow to slide off due to the steeper roof pitch. Keeping the plastic drum-tight is also crucial, as loose, sagging plastic creates pockets where wet snow can easily collect and pool.

If your high tunnel is heated, turning up the thermostat a few degrees before a major storm can warm the plastic enough to melt falling snow on contact. For unheated tunnels, closing all doors and vents tightly helps trap any ambient ground heat inside, raising the internal temperature just enough to assist with shedding.

Finally, ensure there is adequate spacing between multiple high tunnels. If structures are placed too close together, the snow shedding from one roof will pile up against the side of the adjacent tunnel, quickly blocking the shedding path and creating dangerous lateral pressure. Keep at least half the width of the tunnel as clear space between structures to accommodate shed snow.

Managing winter weather is one of the toughest challenges of running a small-scale high tunnel operation. By equipping yourself with the right combination of rakes, brooms, and protective gear, you can confidently protect your investment from structural collapse. Stay safe, plan ahead, and keep those roofs clear to ensure a bountiful and early spring harvest.